Cement-mixer.



No. 888,118 PATENTED MAY 19, 1908. IA.J.REMLEY.

"CEMENT MIXER.

APPLICATION FILED NOV. 5. 1906.

2 SHEETS-SHEET 2 A TTOR/VE Y5 To all whom it may concern:

being shown in the present instance.

UNITED STATES PATENT OFFICE.

ALBERT J. REMLEY, OF CRAWFORDSVILLE, INDIANA.

CEMENT-MIXER.

Be it known that I, ALBERT J. REMLEY, a citizen of the United States, residing at Crawfordsville, in the county of Montgomery and State of Indiana, have invented a new and useful Cement-Mixer, of which the following is a specification.

This invention relates to machines employed for the mixing of cement and similar compounds and consists in the novel construction-and arrangement of parts hereinafter described, illustrated in the accompanying drawin s, and particularly pointed out in the appenc ed claim. y

In the accompanying drawings :Figure 1 is a longitudinal sectional View of a cement mixer constructed in accordance with the invention. Fig. 2 is a transverse sectional view of the same on the line 2-2 of Fig. 1. Fig. 3 is a detail perspective view of the mechanism for adjusting the quantity of cement fed to the mixer. Fig. 4 is a detail sectional view through one of the rolls and a portion of the hopper.

Similar numerals of reference are employed to indicate corresponding parts throughout the several figures of the drawings.

The working parts of the machine are su orted on a suitable frame 10 that preferably is provided with carrying wheels 1 1 by which it may be moved from place to place. This frame supports the cylinder 15 of the mixer, the latter being open at the discharge end and provided with a small lip 16 over which the mixed material is forced and delivered to any suitable point, an elevator or carrier 17 The opposite end of the cylinder is closed by a head 18 having a bearing for a shaft 19, while a hanger 20 forms a support for the shaft at the discharge end of the cylinder.

The shaft is of rectangular or polygonal form, except at its bearing end, and on said shaft are mounted mixing paddles 21, the hubs of which have openings corresponding to the contour of the shaft, so that auxiliary fastenings will not be necessary. The cement and sand or other material is fed into the cylinder through the opening 22, and the mixing operation starts, while the ingredients are practically dry, water being supplied at a oint somewhat in advance of the feed end y a water pipe.connection 23. The mass of material isthen thoroughly mixed and hydrated, and finally is forced from the Specification of Letters Patent.

Application filed November 8, 1906.

Patented May 19, 1908.

Serial No. 842,538.

discharge end of the machine in the form of cement or concrete, ready for immediate use.

Arranged at a point above the mixing cylinder is a hopper carrying frame 26, at the upper portion of which is a feed hop er 27 divided into two sections by a vertica ly arranged partition 28, the cement bein fed to the portion 29 of the hopper, while the sand or other material to be mixed with the cement is fed to the portion 30, preferably by means of an elevator or endless carrier 31, although the latter is not important.

The hopper carrying frame is provided with bearings for a shaft 31 that is arranged parallel with the shaft 19, and is connected thereto b a pair of sprocket wheels 32, and a link belt 33, and when the shaft 19 is revolved through its belt wheel 34 or other driving connection, motion will, also, be transmitted to the shaft 31'.-

The shaft 31 carries corrugated feeding rollers 36 and 37,the roller 36 being surrounded by a ring 37 that is provided with inwardly extending teeth or lugs arranged to enter the corrugations of the roller. The ring 37 is provided with an annular rib 38, and this rib is received in agroove 39 formed in an adjustable plate 40 that extends out through an opening at the side of the hopper and carries a threaded lug 41 adapted to rethe partition plate 28, in order to alter the size of the passage through which the cement must pass from the portion 29 of the hopper to the mixer. By moving the plate and the ring 37 away from the partition, the quantity of cement fed may be increased, and by forcing them closer together, the quantity may be diminished. The shaft also carries a sand feeding roller '37, and the latter is remov able, so that other rollers having corrugations of different depth or differently spaced may be substituted in case the quantity or quality of the sand or other material is to be altered. To accomplish this, the bearing 42 for one end of the shaft 31 is bolted to the hopper carrying frame 26 and may be readily detached, so as to permit the removal of the roller 37, and the substitution of another roller therefor.

In order to prevent the feeding of rocks or other large articles to the mixing chamber,

formed of pivotally mounted fingers 44 which are held closed by suitable springs 45. When a rock or other large article is fed down by the corrugated roller or rollers, the fingers will yield, allowing the rock to drop to the outside of the casing.

Below the rollers is arranged a chute 50 into which both the sand and the cement fall, and by which the material is directed toward the entrance opening 22 of the mixing chamber, and as the layer of sand passes down this chute, the layer of cement will fall on top of the same, and there is better opportunity for more thorough and intimate intermingling of the materials while in the mixing chamber.

With a device constructed in accordance with this invention, cement may be thoroughly mixed with sand or other material, and the proportions of the ingredients maybe varied in accordance with the quality of cement or concrete desired. The ingredients may be fed continuously and the discharge of the finished product is continuous, it being unnecessary to stop the operation of the machine for the purpose of dumping the mixed material. a

I claim In a device of the class described, a mixer having a driving shaft, a shaft bearing suspended from the frame of the machine and forming a support for the shaft at the discharge end of said mixer, a pair of feed hoppers arranged above the mixer, a shaft extending across the bottoms of both hoppers, a pair of grooved feeding rollers mounted on said shaft, means in one of the hoppers for adjusting the available area of one of the feed rollers, movable members forming a portion of the side wall of the other feed hopper to permit the discharge of foreign matter and large particles of material, a driving connection between the two shafts, and a chute extending under both feed rollers and terminating at the inlet end of the mixing cylinder, said chute being arranged to receive material fromboth hoppers, and to permit partial mixing of such materials in advance of their entrance-into the cylinder, substantially as specified.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

ALBERT J. REMLEY.

Witnesses:

CHAS. L. GooDBAR, WILLIAM A. SWANK. 

